A330/340 APU

1. On the ground with engines not running, the APU can be started using: a. All 3 aircraft batteries. b. The engine bleed air. c. The APU battery.

2. The Electronic Control Box (ECB) is primarily a full authority digital electronic controller that performs the APU system logic for all modes of APU operation such as: a. Sequence and monitoring of start. b. Speed and temperature monitoring. c. Monitoring of bleed air and shut down. d. All of the above.

3. The APU BLEED valve is automatically closed above ______ feet climbing by the ECB. a. 23,000. b. 25,000. c.28,000. d.28,500.

4. When selected on, the APU START push button, will: a. Connect the APU generator to the aircraft electrical system. b. Start the APU if the APU MASTER SW was previously selected ON. c. Open the air intake flap and supply fuel pressure.

5. Which one of the following statement is true?. a. The APU is supplied by the aircraft fuel system via two APU fuel pumps (forward or aft). b. The APU is supplied by its own fuel reservoir. c. The APU is supplied by the aircraft fuel system via the single APU fuel pump.

6. The APU has an integral independent lubrication system for lubrication and cooling. a. True. b‐ False.

7. Before the APU starter is energized: a. The APU bleed switch must be deselected. b. Both APU fuel pumps must be selected on. c. The APU air intake flap must be fully open.

8. The ECB (Electronic Control Box) controls the fuel flow. a. True. b‐ False.

9. When the APU MASTER SW is selected ON: a. the APU computer automatically completes a self‐test, opens the air intake flap and supplies fuel pressure. b. The APU computer automatically starts the APU. c. Connects the APU generator to the aircraft electrical system. d. The APU door opens.

10. The APU MASTER SW FAULT light will illuminate: a. When APU low oil pressure is detected. b. When an automatic shutdown of the APU occurs. c. For an APU overheat or APU fire. d. If the batteries are selected OFF while the APU is operating.

11. The APU may be started up to what altitude?. a. The APU can be started at any altitude using normal aircraft electrical power. b. The APU can be started up to 35,000 feet using only the aircraft batteries. c. The APU can be started up to 30,000 feet using only the aircraft batteries. d. The APU can be started up to 25,000 feet using only the aircraft batteries.

12. The APU system page will appear on the ECAM: a. When selected by the crew. b. Automatically whenever the APU is started. c. Both are correct.

13. You switch off the APU but curiously you still have the APU AVAIL indications. a. There is a fault with the APU master switch. b. The APU will run for a cooling period of 60 to 120 seconds because you have been using the APU bleed. c. You have to push the START SW to initiate the shut down sequence.

14. The air intake and an electrically operated flap allow air to reach the compressor inlet. a. True. b‐ False.

15. With the engines off, if the AVAIL light is illuminated on both the APU START pushbutton and the EXT PWR push button, what is the source of electrical power for the aircraft busses?. a. It is not possible to determine without checking the ECAM. b. The aircraft batteries. c. The APU. d. External power.

16. BAT 1 and 2 push buttons do not need to be selected ON if external power is available. a. It is normally left in the lights out position. b. When selected OFF, the APU generator is de‐energized. c. Both are correct.

17. What is the maximum altitude at which the APU may be started using the batteries only?. a. 15, 000 ft. b. 20, 000 ft. c‐25000 ft. d‐30000 ft.

18. If APU is operating in flight: a. You may use ELEC plus bleed air up to FL22500. c. There are no altitude restrictions on use of APU electrics or bleed air. b. Use of electric power only is restricted to FL250.

19. With nobody in the cockpit, if you have an APU FIRE, which statement is correct?. a. On the ground, an APU EMER shut down will occur and the APU fire bottle will be discharged automatically. b. On the ground, you have to perform the ECAM actions to shut down the APU and extinguish the fire from the cockpit. c. On the ground an APU AUTO shut down will occur but you have to discharge the APU fire bottle manually. d. In the air, an APU EMER shut down will occur and the APU fire bottle will be discharged automatically.

20. The basic element of the APU is a single shaft gas turbine which delivers ______ power for driving the accessory gearbox (electrical generator) and produces bleed air (engine starting and pneumatic supply). a. 2nd stage compressor. b. 3rd stage turbine. c. 2nd stage turbine. d. Mechanical shaft.

21. Fire on ground or in flight will cause the APU MASTER SW pushbutton FAULT light to come on. a. True. b. False.

22. The ECB (Electronic Control Box) controls the electric starter. a. True. b. False.

23. With battery power, what would an APU fire test look like?. a. APU FIRE pushbutton illuminated. b. SQUIB and DISCH lights illuminated. c. Both are correct.

24. The starter engages if the air intake is closed and the MASTER SW and the START pushbuttons are ON. a. True. b‐False.

25. The APU may obtain power for starting from: a. Ground services. b. Normal aircraft supply. c. The aircraft's batteries or in combination with the external power. d. All of the above.

26. The Electronic Control Box (ECB) is primarily a full authority digital electronic controller that performs the APU system logic for all modes of APU operation such as: a. Sequence and monitoring of start. b. Speed and temperature monitoring. c. Monitoring of bleed air and shut down. d. All of the above.

27. The APU cannot be shut down from outside the aircraft. a. True. b‐False.

28. What are some of the causes for an APU automatic shutdown?. a. Fire (on ground only), EGT over temperature, No acceleration, low oil pressure. b. Fire (on ground only), EGT over temperature, Under speed, Over speed, low oilpressure, high oil pressure. c . Fire (on ground only), EGT over temperature, Reverse flow, Over speed, low oil pressure, high oil pressure. d. Fire (on ground only), under speed, over speed, EGT over temperature, Reverse flow, Low oil pressure, DC power loss when on BAT operations only.

29. Maximum altitude for APU bleed operation is: a. 15, 000 ft. b. 18, 000 ft. c. 20, 000 ft. d. 22, 500 ft.

30. The LOW OIL LEVEL advisory message is set by the: a. SDAC. b. ECB. c. FCDC.

31. On ground, the No Break Power Transfer function is inhibited in case of APU shutdown generated by which of the following conditions?. a. Automatic APU shut down triggered by the ECB. b. APU shut down from the REFUEL/DEFUEL panel or from the APU FIRE pushbutton. c. APU shut down from emergency control provided on the external power panel. d. All of the above.

32. Can the APU be used with wing anti‐ice on?. a. No. b. Yes, but only for electrical power. The APU bleed valve should not be opened while using wing anti‐ice. c. Yes, except during approach and go‐around. d. Yes, but the altitude of utilization is limited to 15, 000 ft.

33. The ECB (Electronic Control Box) controls the electric starter. a. True. b. False.

34. The air intake and an electrically operated flap allow air to reach the compressor inlet. a. True. b. False.

35. A 60 minutes cool down period must be observed: a. After 3 starts attempts without a cool down. b. After 2 consecutive start attempts. c. After 2 start attempts provided a 1 minute cool down was observed after the first start.

36. To shut down the APU, the crew must: a. Select the APU START pushbutton to OFF. b. Select the APU MASTER pushbutton to OFF. c. Select both the APU START and MASTER switches to OFF.